Biology College


11. Which of the following statements about the western rattlesnake is NOT true?
a. Venom enables the western rattlesnake to immobilize and ingest its prey immediately.
b. Populations share their habitat with animals such as small mammals and amphibians.
c. Its range includes parts of North and Central America.
d. Venom helps to destroy the tissue of the rattlesnake's prey.




The western rattlesnake, also called the prairie rattlesnake, is a brownish-green-coloured rattlesnake found across most of the United States west of Texas and the Dakotas. Western rattlesnakes are also found in northern Mexico and southwest Canada, mostly in grasslands and in brush. There are nine subspecies, one of which is found in southeastern Alberta.The western rattlesnake eats small mammals, ground-nesting birds, amphibians, and reptiles, including other snakes. It locates its prey by using its tongue to sense airborne chemicals given off by the prey. Once the prey has been located, the rattlesnake rapidly strikes out with its fangs, then releases its prey quickly. Venom is released from the fangs when the snake strikes, immobilizing the prey, which the snake then tracks and eats. The venom also works to destroy tissue and help with the digestion of bulkier prey.

Answers

Answer 1

The statement that is NOT true about the western rattlesnake is (d) Venom helps to destroy the tissue of the rattlesnake's prey.

Venom plays a crucial role in the western rattlesnake's hunting strategy, but it does not specifically help to destroy the tissue of its prey. Instead, the venom primarily serves to immobilize and subdue the prey, allowing the rattlesnake to safely ingest it.

When the western rattlesnake strikes its prey, venom is released from its fangs into the prey's body. The venom contains toxins that target the prey's nervous system, causing paralysis and preventing escape. It also helps to break down the prey's blood vessels and tissues, aiding in the digestion process.

However, the primary function of the venom is not to destroy the tissue of the rattlesnake's prey. Rather, it is to incapacitate the prey, making it easier for the snake to capture and consume. Once the prey is immobilized, the rattlesnake uses its specialized jaw structure to swallow the prey whole or in large pieces.

Therefore, option d is the statement that is NOT true about the western rattlesnake.

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